Put the sliced pears in a large bowl and add the blackberries.
Next add the brown sugar, honey, cinnamon, and vanilla extract.
Stir it all together and set aside to macerate (that’s when you mix together fruit with sugar and let it sit and get all cozy together).
Preheat your oven to 375°F, then get together your ingredients for the awesome crumble topping.
Cream together butter and brown sugar.
Then stir in the rest of the crumble ingredients.
Put the macerated fruit into an 8-9" cast iron skillet baking dish or cast iron skillet.
Distribute the crumble topping over the top.
If your baking dish is super full you may want to put it on a sheet pan before putting in the oven in case of bubbling over. Bake in the preheated 375°F oven for 30-45 minutes, or until the top is golden brown and the fruit juices are bubbly. It should also smell wonderful! Let it cool, then serve with a scoop of vanilla ice cream.